CODEWITHSUNDEEP
matlab3dgridcontour
killajoule
killajoule

Reputation: 3832

Is there a way to put grid lines on top of a contour plot?

I am using the contourf function to create a contour plot:

enter image description here

I would like to get grid lines to appear on top of the plane that shows the contours.

I came across one solution, but it only works in 2D (that is when you view the contour plot in 2D) which involved the following two commands:

grid on
set(gca,'layer','top');

However, the grid lines do not appear when viewing the axes in 3D. Is there any way to do this simply?

Upvotes: 4

Views: 8932

Answers (1)

bla
bla

Reputation: 26069

You can accomplish that using line object manipulation that re-writes the grid lines, or a small FEX tool called gridxy . For example, lets recreate a figure that has the same properties:

figure
set(gcf,'Renderer','OpenGL')

%# plot surface and contour
Z = peaks;
surf(Z), hold on
[~,h] = contourf(Z);       %# get handle to contourgroup object

%# change the ZData property of the inner patches
hh = get(h,'Children');    %# get handles to patch objects
for i=1:numel(hh)
    zdata = ones(size( get(hh(i),'XData') ));
    set(hh(i), 'ZData',-10*zdata)
end

And add the extra grid lines:

v = get(gca);
hg=gridxy(get(gca,'XTick'),get(gca,'YTick'), 'Color',[1,1,1]*0.25,'Linestyle',':');
set(hg,'Zdata',repmat(v.ZLim(1)+eps,[1 numel(get(hg,'Ydata'))]));

enter image description here

However, is there a reason not to use surfc ? For example:

Z = peaks(20);
surfc(Z);
view(-45, 20);

enter image description here

Upvotes: 3

Related Questions